Improvement in governors



.which is mounted on a shaft, 0.

rawns .a'rnn'r rrron.

IMPROVEMENT IN GOVERNORS.

" 7 Specification forming part of Letters Patent No. 124,871, datedMarch 19, 1872.

SPECIFICATION.

Specification describing an Improved Governor for regulating the speedof steam or other motivepower engines, invented by, DANIEL JOHN WOLFE,of the city and State of New York, United States of America, but atpresent residing at 15 Water street, Liverpool, in the county ofLancaster, in that part of the United Kingdom of Great Britain andIreland called England.

My invention relates to constructing governors so as to get a morecorrect and speedy action on the throttle-valve than is arrived at bythe governors now in use, and more par ticularly so in the case of theengines of screw steam-ships which in a heavy sea run very irregularly,and the action on the throttle-valve is required to be immediate, andthe governor, therefore, very sensitive to any increase of speed of theengines. This governor can be worked direct from the main shaft or othermoving part of the engines. The governor also, through being verysensitive, will work satisfactorily driven at a much slower speed thanis the case with governors now in use.

Figure 1 of the accompany drawing illustrates a sectional elevation ofmy improved governor. Fig. 2 illustrates a plan of the same. Fig. 3 is'aplan, showing the strap for working the throttle-valve; and Fig. 4 .is a

similar plan, showing the strap extended.

Like letters and figures marked on the drawing denote similar parts.

The scale of the drawing is three inches to one foot.

A governor constructed according to my invention consists of a disk, a,with a boss, I), The disk to is fitted with four slots, d d 01 d whichform guides and run from the boss b to the extremity of the disk (1. atright angles to each other. At the extremity of the guides d d d 01there are lugs or projection e e e 6 which are so arranged as to receivea steel or other suitable spring, f. On the top of the disk is mounted awheel, g, which is cut into four segments, 9 g g? g, and has a heavy rimat its circumference. These segments spring from a segmental boss, h, hW, and h The segments are respectively fitted with lugs or provisions ii '5 i which take into the guides or slots in the disk at and take theother end of the springs f. The springs are so arranged as to keep thesegments of the wheel in position. 70, guide, or steadying pieces 011the segments of the wheel. The segmental boss h k h h it fitted with anexpanding strap, l l, hich strap is connected to the throttle-valve bysuitable gear from the rod m. The strap is held in position by springs nn 11, 11 which allow it to expand and make it contract, or control itaccording to the momentum and centrifugal force of the wheel g. Thesegments g g g g fly out from the center as the speed increases, and arebrought back to their normal position asthe speed decreases by the meansof the spring f, the segmental boss h h h k acting in a similar manneron the strap b, and which is brought back to its normal position by thesprings n M41? a which springs are made of suflicient strength to openthe throttle-valve and give the engines steam again. The expansion ofthe strap 1 l and the segmental boss h h h k is illustrated in detail atFigs. 3 and 4:. The joints of the segments of the wheel 9 are dovetailedor lapped at 0 0 o 0 in such a manner that their surfaces always bear oneach other. The governorshaft 0 may be driven from the main shaft of theengines by means of a pairof bevel or friction wheels, 10 p, so arrangedas to give the requisite increase of speed to the governor in excess ofthat of the engines, as, of course, the action of the governor is moreperfect at high speeds, although it will not require to run as fast asthose now in use. In the case of very fast-going engines the governormay be mounted vertically direct on the main shaft and geared direct tothe throttle-valve, or worked by a rope, or strap and pulley. Theweights of the segments of the expand ing wheel and the strengths of theretaining springs, also the strengths of the springs on the expandingstrap, must bear relative pro portion to the speed of the engines, thecen trifugal force of the expanding segmental wheel regulated by theretaining springs be ing the principle of the governor.

Having thus described my invention, what In witness whereof, I, the saidDANIEL I claim is JOHN WOLFE, have hereunto set my hand and Thecombination of the disk 11, accessory seal this twenty-eighth day0fNovember,187l.

springs f, segmental expanding wheel ,7, seg- DANIEL JOHN WOLFE. [L. s.]

mental boss h, and expanding strap 1, in a Witnesses:

centrifugal governor, all arranged substa-u- FREDERICK JOHN CHEESBROUGH,

tinlly in the manner and for the purpose set JOHN REDMOM),

forth, Both of 15 Water street, Liverpool, England.

